Boron carbide
Extremely hard ceramic compound / From Wikipedia, the free encyclopedia
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This article is about B4C. For other boron carbides, see Boron carbides.
Boron carbide (chemical formula approximately B4C) is an extremely hard boron–carbon ceramic, a covalent material used in tank armor, bulletproof vests, engine sabotage powders,[2] as well as numerous industrial applications. With a Vickers hardness of >30 GPa, it is one of the hardest known materials, behind cubic boron nitride and diamond.[3]
Quick Facts Names, Identifiers ...
Names | |
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IUPAC name
Boron carbide | |
Other names
Tetrabor | |
Identifiers | |
3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.031.907 |
PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
B4C | |
Molar mass | 55.255 g/mol |
Appearance | dark gray or black powder, odorless |
Density | 2.50 g/cm3, solid.[1] |
Melting point | 2,350 °C (4,260 °F; 2,620 K)[1] |
Boiling point | >3500 °C[1] |
insoluble | |
Structure | |
Rhombohedral | |
Hazards | |
Safety data sheet (SDS) | External MSDS |
Related compounds | |
Related compounds |
Boron nitride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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